Calculating-machine.



No. 892,704. PATENTED JULY 7, 1908. T. BAUBRLE.

CALCULATING MACHINE. APPLIOATION nun rm. 1a. 1908.

Attest: 1% Inventor:

by 24 Atrjv.

2 SHEETS-SHEET 1.

NO. 892,704. PATENTED JULY 7', 1908. T. BAUERLB.

GALQULAT ING MACHINE.

APPLICATION FILED 1115.18, 1903.

2 SHEETS-SHBET 2.

14? 12 Q \Q fQ.

Attest: Q3; Inventor:

'IUBIAS Bi'lUEllLlI, OF ST. GEORGEN. GERMANY.

CALCULATING-MACHINE.

Specification of Letters Patent.

Patented July 7, 1908.

Application filed February 18, 1908. Serial No. 416,584.

To a ll whom it may concern:

Be it known that I, Tomas Barnum, a citizen of the Grand Duchy of Baden, and a subjert of the Grand Duke of Baden, residing at St. Gem-gen, Schwarzwaid, Baden, Germany, have invented certain new and useful Improvements in Calculating-Iliaohines, of which the following is a specification.

This invention relates to calculating machines and its novelty consists in the con struerion and adaptation of the arts as will be more fully hereinafter pointer out.

There has long been upon the market a (lass of ealculating machines employed in performing the operations of addition, subtrm'tiou. multiplication and division in which the upper easing of the machine is provided with a series of slots along side of which are dis ilayed numerals in denominational series am in which slots buttons are ada ted to slide and which buttons are connectm by a propriate means with the calculating mec anism, so that when the buttons are adjusted opposite the proper numerals, the items so set up are used in performing the operations of arithmetic above indicated. A recent machine of this class is described in the patent of Alexander if echnitzer, issued Jan. 2, 1906, No. 801L075 and assigned to the Keuflel & Esser Company, of lloboken. N. J. In using this machine and other machines supplied with the mechanism above referred to, it sometimes ocrurs that when an item to be used in an arithmetical operation is set up by moving the buttons referred to in the slots in the easingol' zbemaehiues. theo eratnrinadvertent y places one or more 0 the buttons in such a position between two of the numerals in the series that it is thereafterimpossible to tell to which one it belongs, and sometimes it also happens that after an item has been properly set up in the machine and the operation upon it has been performed, all of the buttons representing the item are not restored to zero and consequently when a new item is enumerated and an operation is sought to be performed with it. the use! of the mar-himis uncertain ronrerning the number emlmemiedv It is the purpose of this invention toovername these disadvantages and this is done by providing menus whereby the item setting nations are iu-rurntely positioned opposite the proper minerals and whereby, when the desired aritluuetirnl operation has been mum common means to their zero or original positions.

In the drawings, Figure 1 is a top plan view of the u )PEI plate of the casing of a calculating maclune embodying the invention with a portion of the main plate removed to show the parts underneath; Fig. 2 is a front olevation of the same parts, and Fig. 3 is a trans-' verse section on the plane of the line 3-3 in Fig. 1.

' In the drawings 10 is the upper late of the casingin the machine. It is provir ed with slots ll arranged in suitable positions with respect to the calculating mechanism (not shown). Each of the slots is provided with a button 12 having a shank 13 of suitable rectan ular form to preventit from turning in its 5 0t, and which shank is provided with a longitudinal plate 14 having notches 15 along its inner edge, and a depending projecting pin 16 secured to its under side. The butt-on 12 is also provided with a pointer 17 projecting over the plate 10. On top of the late 10 and along side of each slot is disp a ed a series of numerals 18, from 9 to 0, am reach from the edge of the plate forward. To t ie under surface of the plate 10 is secured a series of springs 20, one for each slot. The springs are fastened to the plate by screws 21, or in any other convenient manner. Each spring is bent at its extremity 22 to form a sort of a toothwhic-h is adapted to engage with the notches 15 on the plate 14.

The purpose of the construction described is to secure accurate ositioning of the buttons 12 with respect to t e different numerals of the series (118 layed on the plate. As a but-- ton is mover so that its pointer 17 is opposite any selected numeral of the series, the corresponding notch 15 on the plate 14 will en age with the bend 2'2 of the spring 2!) and ll1( ioate bv such engagement to the operator that the desired osition has been reached, thus reventing him from moving the button any urther. After such of the buttons as may be required for the purpose have been set to their respective positions to enumerate a particular item in the operation of the machine, it has been usual, after the calculation has been completed, manually to more each of the buttons back to zero. .\s before stated, sometimes the operator neglrrts or forgets to restore the butlons to zero and when anew item is sought in be enmnernted. errors arise as has been stated. res oring plated, all of thebuttons are restored by a l mechanism is therefmo provided by which is done by moving the all of the buttons are surely and simultaneously brought back to their original posi tions. To that end a restoring bar 30 is supported upon two links 31 mounted on pivots 32 secured to the under surface of the upper plate. The plate is rovided with a curved slot 33 to permit of t e passage of the shank 32 of a button 35 mounted at the end of the left-hand link 31. The shank 34 is securely connected to the bar 30. A spriniilfi secured to one of the links 31 and to t e plate 10, serves to retract the links and under its tension to move them back to their original position. The bar 30 is so arranged that it will engage with any of the pins 16 on the lates l4 and when the bar is moved, which button 35 toward the operator, along the slot 33, all of the pins 16 on the buttons which have been moved away from their zero ositions will be simultaneously moved bae r by reason of the fact that their respective 16 will be brought into engagement wit 1 the bar 30.

What I claim as new is:

1. in a calculating machine, comprising item enumerating buttons arranged in series each button hnvmg a row of digits displays along its line of movement, means for simultaneously retracting to their original position all of the buttons which have been moved therefrom.

2. In a calculating machine comprising item enumerating but-tons arranged in series, ouch button aving a row of digits dis played along its line of movement, means for simultaneously retracting to their ori inal position all of the buttons which have con moved therefrom, comprising a pm on each butt on and a common retracting or adapted to anger-nwith all of said pins.

3. In a calculating machine, comprising item enumerating buttons arranged in series, each button having, a row of digits displayed alom its line of movement, means for simultaneously retracting to their m'iginul ositiou all of thc buttons which have can moved th rcfrom, comprising a depending pin on each button, a retracting bar adapted to engage all of said pins and means for normally preventing said cngn ement.

i. In a calculating machine, comprising item cumin-ruling buttons nrrauged in series. each button having a row of digits displayed along its line of movement, means for simultaneously retracting to their original position all of the buttons which have been moved then-from. comprising :1 depending pin on each button. a rctructinp bur adapted to engage all ol said pins and means for normally preventing said cngngcmont. consisting .of a spring' secured directly or indirectly to the bar and to n iixcd port of the machine.

6. in u nmchino oi the class described, an

upper plate provided with slots, item enumerating buttons slidable in said slots and having projections extending beneath the plate, a restoring bar suspended beneath the plate to contact with said projections and means for moving the bar to sweep against all of said projections.

6. In a. machine of the class described. an upper plate provided with slots, item enumerating buttons slidable in said slots and having projections extending beneath the plate, a restorin bar suspended beneath the late on paralle links and a handle projectmg upwardly through the plate whereby the bar may be moved to contact with said projections.

7. In a machine of the class described, an upper plate provided with slots, item enumerating buttons slidable in said slots and having projections extending beneath the late, a restoring bar suspended on parallel inks beneath the plate and pro vidod u ith a handle whereby it may be moved to contactwith said projections to sweep all of said buttons.

8- In a machine of the class described, an upper plate provided with slots, item enumerating buttons slidable in said slots and having projections extending beneath the late, a restoring bar suspended on parallel inks beneath the plate and provided with a handle whereby it may be moved to contact with said projections to sweep all of said buttons, and a spring adapted normally to keep the bar out of contact with said projections.

9. In a machine of the class described. an upper plate provided with slots, item enumerating buttons slidable in said slots, and having projections extending beneath the plate and means whereby they may each be positioned at optional p aces along the slots in combination with a restoring bar suspended beneath the plate to contact with said projections and means for moving the bar to sweep all of said projections.

10. In a machine of the class described, an upper plate provided with slots, item enumerating buttons slidable in said slots and having projections extending beneath the plate and provided with a notched slide bcneath the plate and a spring adapted to engage therewith in combination with a restoring bar also suspended beneath the plate and adapted, when moved, to contact with said promotions to sweep all of the buttons to their original )ositions.

Signed at .rciburg.

, Baden. January .14, 1908.

WALTER A. lmonmn, Wrummt GOEHRIG. 

